What are the specs for this Limit Switch?

The correct replacement for Goodman model GCH90453BXAA — 20162906 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Goodman equipment which lists the model number GCH90453BXAA — 20162906.

What symptoms indicate I need a new limit switch?

Common symptoms that indicate you need a new limit switch include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Is this limit switch compatible with Bryant or Payne systems too?

Many Goodman parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

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Goodman

OEM Goodman M4 Primary Limit Switch for GCH90453BXAA — 20162906

Name: OEM Goodman M4 Primary Limit Switch for GCH90453BXAA — 20162906
Brand: Goodman
SKU: GOODMAN-9659
Price: 26.95 USD
Availability: InStock

SKU: GOODMAN-9659 Brand: Goodman

$26.95 $35.95

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The Goodman 20162906 M4 Primary Limit Switch is a genuine OEM high-limit safety control for the Goodman GCH90453BXAA gas furnace. As the primary limit, it continuously senses supply-air temperature at the heat exchanger and shuts down the burners if the furnace overheats — protecting the heat exchanger, wiring, and structure. The M4-series switch is factory-calibrated to a specific trip temperature matched to your furnace's design airflow and rise.

Specifications

Part type: M4-series primary high-limit switch
Reset: Automatic (opens/closes on temperature)
Compatibility: Goodman GCH90453BXAA and compatible 90% AFUE furnaces
Function: Cuts burner circuit on over-temperature; auto-resets when cool
Brand: Genuine Goodman OEM

OEM vs. Generic

The primary limit's trip point is engineered around your specific furnace. Genuine Goodman OEM ensures the exact cutout temperature and mounting geometry, avoiding nuisance trips or delayed protection. Generic limits with a different calibration can compromise both comfort and safety, so OEM is the recommended replacement.

Installation Difficulty

Easy to Moderate. Power down the furnace, disconnect the wiring, remove the mounting screws, and install the replacement in the same orientation. Most DIYers can complete it quickly; if the original limit was tripping, have a technician confirm airflow and filter condition before returning the unit to service.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Goodman M4 Primary Limit Swi...

$26.95

Frequently Asked Questions

Does this Limit Switch fit my Goodman GCH90453BXAA — 20162906?

Yes. This is the factory-specified OEM limit switch for the Goodman GCH90453BXAA — 20162906. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the limit switch on my Goodman GCH90453BXAA — 20162906?

Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.

What symptoms mean I need a new limit switch?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this limit switch compatible with Bryant or Payne too?

Many Goodman parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Goodman limit switch?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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